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Why People Believed Hippos Were Related to Whales

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Why People Believed Hippos Were Related to Whales

Short | 01:26

Hippos were once believed to be related to whales. They're both mammals, they both sleep underwater, and they both rise to breathe in their sleep, without waking.

On TV

    • Wednesday
    • 10:00pm
    Apr 10
    • Thursday
    • 1:00am
    Apr 11
    • Sunday
    • 6:00am
    Apr 14

More About This episode

Journey into the heartland of Southern Africa as we fly the skies of the richly diverse country of Zambia. Explore mountain springs that swell into raging rivers, sacred places where tribes rekindle their cultural history, and one of Africa's most pristine wildlife sanctuaries. We also delve into the nation's complex past, marked by slave trade, British colonialism, and its transformation in 1964 to a proudly independent African nation.

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